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Abstract：
The spatial spillover of urban innovation has increasingly become an important factor affecting urban total factor productivity (TFP) growth. Based on the panel data of 108 cities in the Yangtze River Economic Belt from 2004 to 2020, this paper illustrates the spatial-temporal evolution trend of urban innovation and manufacturing total factor productivity and uses the spatial Dubin model to study the direct and indirect effects of urban innovation on manufacturing total factor productivity. The main conclusions are as follows:(1)Spatial correlation and heterogeneity between urban innovation and manufacturing total factor productivity prove to be significant in the Yangtze River Economic Belt;(2)Urban innovation has a significant positive impact on manufacturing total factor productivity and has a positive spillover effect on surrounding cities; (3)The effect of urban innovation on manufacturing total factor productivity varies with time and region;(4) Mechanism analysis shows that talent agglomeration significantly promotes the positive impact of urban innovation on manufacturing total factor productivity, while the spillover effect is insignificant.
摘要：
城市创新的空间溢出越来越成为影响城市全要素生产率(TFP)增长的重要因素。本文基于2004-2020年长江经济带108个城市的面板数据,阐释了城市创新与制造业全要素生产率的时空演变趋势,并运用空间杜宾模型研究了城市创新对制造业全要素生产率的直接效应和间接效应。主要结论如下:(1)长江经济带城市创新与制造业全要素生产率的空间相关性和异质性显著;(2)城市创新对制造业全要素生产率具有显著的正向影响,对周边城市具有正向的溢出效应;(3)城市创新对制造业全要素生产率的影响随时间和区域而变化;(4)机制分析表明,人才集聚显著促进城市创新对制造业全要素生产率的正向影响。而溢出效应微不足道。
